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Thread: H22a/h22z

  1. #16
    Administrator azjs's Avatar
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    All in a name - the h22z is just as reliable

    -az
    B68-P 4th Gen Si - Tuned H22, Tuned Chassis, Detuned Driver

  2. #17
    Gold Member Menthu Rae's Avatar
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    Quote Originally Posted by azjs
    All in a name - the h22z is just as reliable

    -az
    Quote Originally Posted by scottyj
    luke, i would get h22a not z... for all the above reasons - h22a is more recognisable...
    Did you misread Az? Also, msg me on MSN next time you're on - I wanna ask something re: pistons

    2001 Honda Prelude VTi-L [NH-623M]
    BB6 Squad Member #2 [BBH.22A]

  3. #18
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    Differences Between H22A4 and H22Z1

    Quote Originally Posted by H22A View Post
    Does anyone know the difference between these two.
    Just read this thread.

    Yes, agreed, it is nigh impossible to get specs on the H22Z1. Is not even listed in the redbook valuations, where models from 1999 - 2001 are listed (incorrectly?? Yes/No??) with the H22A4 block.

    Just wondering whether your model has both the ATTS suspension AND the VTi-R motor with a red valve cover and where it redlines? Reason I ask is due to information given to me just recently.

    I had to replace my motor about a month ago in my 1999 Honda Prelude VTi-R with factory standard ATTS. I have an H22Z1 block (with a red rocker cover); tacho redlines at 7,200 rpm.

    I was told several interesting things, which I did not previously know about this engine ... well ... that is according to the place I purchased the replacement engine from.

    We shopped Australia-wide for an H22Z1 engine to fit. We finally found ONLY one and that was in Sydney. That is not to say we exhausted all possibilities, but I spent two days on the phone before I came across an H22Z1 with red rocker cover. The retailer informed me as follows:

    Was told that there is only one engine which will bolt onto the model vehicle with BOTH the VTi-R + ATTS suspension. It is the H22Z1 with red rocker cover.

    Informed me that all H22Z1 engine's are always in short supply and the factory standard with red rocker cover are "plain rare";

    Informed that the H22Z1 with red rocker cover was only ever factory fitted into the above models from 1999 onwards, while the H22Z1 with black rocker cover also factory fitted from 1999 onwards fits a different model.

    The supplier claimed that the power specs for these engines was slightly changed from 1999 onwards, when Honda (apparently) added 3 hp to the previous H22A4 model of 200 PS (147 kW; 197 hp), increasing it to 203 PS (149 kW; 200 hp).

    I am assuming the H22Z1 with the black rocker cover went into the model with either/or ATTS/VTi-R, while the red rocker cover went into the model with both?? Does anyone know whether there is any difference in kW/hp between the factory standard H22Z1 motor with black valve cover and the one with the red valve cover?

    Maybe you guys have connections who can reliably verify all of this??? The Australian Honda Specialists know flock all and I am not always trusting of knowledge passed on by a recond. engine supplier.
    Last edited by Dinger; 19th March 2013 at 04:47 PM.

  4. #19
    Silver Member renzokukenj's Avatar
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    Quote Originally Posted by Dinger View Post
    Just read this thread.

    Yes, agreed, it is nigh impossible to get specs on the H22Z1. Is not even listed in the redbook valuations, where models from 1999 - 2001 are listed (incorrectly?? Yes/No??) with the H22A4 block.

    Just wondering whether your model has both the ATTS suspension AND the VTi-R motor with a red valve cover and where it redlines? Reason I ask is due to information given to me just recently.

    I had to replace my motor about a month ago in my 1999 Honda Prelude VTi-R with factory standard ATTS. I have an H22Z1 block (with a red rocker cover); tacho redlines at 7,200 rpm.

    I was told several interesting things, which I did not previously know about this engine ... well ... that is according to the place I purchased the replacement engine from.

    We shopped Australia-wide for an H22Z1 engine to fit. We finally found ONLY one and that was in Sydney. That is not to say we exhausted all possibilities, but I spent two days on the phone before I came across an H22Z1 with red rocker cover. The retailer informed me as follows:

    Was told that there is only one engine which will bolt onto the model vehicle with BOTH the VTi-R + ATTS suspension. It is the H22Z1 with red rocker cover.

    Informed me that all H22Z1 engine's are always in short supply and the factory standard with red rocker cover are "plain rare";

    Informed that the H22Z1 with red rocker cover was only ever factory fitted into the above models from 1999 onwards, while the H22Z1 with black rocker cover also factory fitted from 1999 onwards fits a different model.

    The supplier claimed that the power specs for these engines was slightly changed from 1999 onwards, when Honda (apparently) added 3 hp to the previous H22A4 model of 200 PS (147 kW; 197 hp), increasing it to 203 PS (149 kW; 200 hp).

    I am assuming the H22Z1 with the black rocker cover went into the model with either/or ATTS/VTi-R, while the red rocker cover went into the model with both?? Does anyone know whether there is any difference in kW/hp between the factory standard H22Z1 motor with black valve cover and the one with the red valve cover?

    Maybe you guys have connections who can reliably verify all of this??? The Australian Honda Specialists know flock all and I am not always trusting of knowledge passed on by a recond. engine supplier.
    I have a ATTS model, 1997

    It has a H22A4 engine

    So they just lied to you
    ʍǝɹɔ uʍop ǝpısdn

    私の進行中のスレッドを確認してください
    Quote Originally Posted by lommytam2342 View Post
    Hey Furo, whats the finger spacing for your rear?
    Quote Originally Posted by Son of Eevil View Post
    How much do I have to pay you or how much dick do I have to suck to get you to take me for a ride?!

  5. #20
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    Same thing honda decided the Z looked cool on the block later on lol

  6. #21
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    lol massive thread revival, I have a 2000 vtir non atts model, my block tells me h22z1 black top,
    i tihink up to 99 is all h22a including atts and 99 onwards is all h22z but atts got red top non atts vtir got black top
    increased power is a myth no one knows the truth

  7. #22
    Junior Member bodaas's Avatar
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    all h22a 98+ is atts model below that model is not atts model

  8. #23
    Silver Member renzokukenj's Avatar
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    Quote Originally Posted by bodaas View Post
    all h22a 98+ is atts model below that model is not atts model
    Are you sure mate?

    I will take a picture in the morning with my build, vin and engine code showing that it's an ATTS model being built in 1997

    Sent from my GT-I9300 using Tapatalk 2
    ʍǝɹɔ uʍop ǝpısdn

    私の進行中のスレッドを確認してください
    Quote Originally Posted by lommytam2342 View Post
    Hey Furo, whats the finger spacing for your rear?
    Quote Originally Posted by Son of Eevil View Post
    How much do I have to pay you or how much dick do I have to suck to get you to take me for a ride?!

  9. #24
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    Quote Originally Posted by renzokukenj View Post
    Are you sure mate?

    I will take a picture in the morning with my build, vin and engine code showing that it's an ATTS model being built in 1997

    Sent from my GT-I9300 using Tapatalk 2
    Not sure if the above is correct or not, but sometimes a car built in 97 is referred to as a 98 model.

    My 4G has 09/91 as the build date but is registered as a 92.

    About the H22z1:

    I had an option of getting a fairly low mileage Z1 or A4 when considering a motor for my 4G & I'd read that there may have been some differences, so I called into the Honda Dealers at Brighton & asked the guy in spare parts who had worked for Honda as a mechanic over 35 years ago & then moved into spare parts. Pity he's now retired as he was a great source of knowledge.

    Basically he said that the z1 and a4 were the exact same motor, the only difference being that the z1 had stronger rods and cam journals being as it was a replacement motor before being used in the Aussie 5Gs at the end of the cycle.

    I asked him if the rods & cam journals were aftermarket ones and he said no they weren't, they were made by Honda using the same materials but with a different manufacturing process.

    I worked at a Steel Foundry for a few years and did learn that the heating and cooling/moulding process can give different results from the same source material, so I assumed that's what he meant.

    He went on to say that Honda always down-played the HP figures on the 4&5G vtecs and that both the z1 & a4 were both closer to 205 bhp than 200. Maybe that's where the alleged 203 bhp figure for the z1 comes from, but if the z1 is 203, 205 or whatever then the a4 is as well.

    I decided to get the z1 because of the stronger rods & cam journals as I plan to keep things mostly OEM apart from the usual I/H/E mods.

  10. #25
    Silver Member renzokukenj's Avatar
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    Quote Originally Posted by mokhkw View Post
    Not sure if the above is correct or not, but sometimes a car built in 97 is referred to as a 98 model.

    My 4G has 09/91 as the build date but is registered as a 92.

    About the H22z1:

    I had an option of getting a fairly low mileage Z1 or A4 when considering a motor for my 4G & I'd read that there may have been some differences, so I called into the Honda Dealers at Brighton & asked the guy in spare parts who had worked for Honda as a mechanic over 35 years ago & then moved into spare parts. Pity he's now retired as he was a great source of knowledge.

    Basically he said that the z1 and a4 were the exact same motor, the only difference being that the z1 had stronger rods and cam journals being as it was a replacement motor before being used in the Aussie 5Gs at the end of the cycle.

    I asked him if the rods & cam journals were aftermarket ones and he said no they weren't, they were made by Honda using the same materials but with a different manufacturing process.

    I worked at a Steel Foundry for a few years and did learn that the heating and cooling/moulding process can give different results from the same source material, so I assumed that's what he meant.

    He went on to say that Honda always down-played the HP figures on the 4&5G vtecs and that both the z1 & a4 were both closer to 205 bhp than 200. Maybe that's where the alleged 203 bhp figure for the z1 comes from, but if the z1 is 203, 205 or whatever then the a4 is as well.

    I decided to get the z1 because of the stronger rods & cam journals as I plan to keep things mostly OEM apart from the usual I/H/E mods.
    If I remember correctly, it's a march build. I thought if it was built in 97 and reg in 98 it's a late 97 build

    Sent from my GT-I9300 using Tapatalk 2
    ʍǝɹɔ uʍop ǝpısdn

    私の進行中のスレッドを確認してください
    Quote Originally Posted by lommytam2342 View Post
    Hey Furo, whats the finger spacing for your rear?
    Quote Originally Posted by Son of Eevil View Post
    How much do I have to pay you or how much dick do I have to suck to get you to take me for a ride?!

  11. #26
    Silver Member diMii's Avatar
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    Well if the rods are stronger in a z1 that could very well be something new I did not know and some interesting news. As they do look perfectly identical the only way to tell would be with a Rockwell b scale of hardness to see if they are actually different

  12. #27
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    Quote Originally Posted by Menthu Rae View Post
    Yeah they were used for the last batch of cars, they were originally spare blocks, for replacements, etc... but they ended up whacking them in late model ludes, and the Euro R's.

    Accord Type R uses an H22A7.

    I heard that their exhaust and intake is slightly different hence has 151kw instead f the usual 147kw
    not sure if its true?

  13. #28
    Regular Member BlackR's Avatar
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    They (Honda) also fixed the rear main and other seals in the H22Z so they didn't leak as easily.

    As for red tops, we never got them here in Australia. They were only released in Europe with an Accord R and some Preludes (Type S's I believe). You can however, purchase the red top as a spare as they'll bolt right onto our engines. It's the blue tops that are as rare as chickens teeth.

    As a rule of thumb, always get the last variant of an engine if your going to replace, as the factory will have ironed most of the bugs out.


    Original Member: 2003 "Adam"

  14. #29
    Regular Member BlackR's Avatar
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    They (Honda) also fixed the rear main and other seals in the H22Z so they didn't leak as easily.

    As for red tops, we never got them here in Australia. They were only released in Europe with an Accord R and some Preludes (Type S's I believe). You can however, purchase the red top as a spare as they'll bolt right onto our engines. It's the blue tops that are as rare as chickens teeth.

    As a rule of thumb, always get the last variant of an engine if your going to replace, as the factory will have ironed most of the bugs out.


    Original Member: 2003 "Adam"

  15. #30
    Junior Member George_walker229's Avatar
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    almost nothing, the Z was put in the newer ludes (99-01) and was also the warranty engine if you needed a new engine in the warranty period

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